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  • Letter
  • Open Access

Evolution of topological charge through chiral anomaly transport

Zilin Yuan1,2,*, Anping Huang1,†, Wen-Hao Zhou3,4,5,‡, Guo-Liang Ma3,4,§, and Mei Huang1,∥

  • 1School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
  • 2Institue of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People's Republic of China
  • 3Key Laboratory of Nuclear Physics and Ion-Beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China
  • 4Shanghai Research Center for Theoretical Nuclear Physics, NSFC and Fudan University, Shanghai 200438, China
  • 5Faculty of Science, Xi'an Aeronautical Institute, Xi'an 710077, China

  • *yuanzilin20@mails.ucas.ac.cn
  • †huanganping@ucas.ac.cn
  • ‡zhouwenhao@xaau.edu.cn
  • §glma@fudan.edu.cn
  • ∥huangmei@ucas.ac.cn
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Phys. Rev. C 109, L031903 – Published 18 March, 2024

DOI: https://doi.org/10.1103/PhysRevC.109.L031903

Abstract

Built upon the state-of-the-art model a multiphase transport, we develop a new module of chiral anomaly transport (CAT) to trace the evolution of the initial topological charge of the gauge field created through sphaleron transition at finite temperature and the external magnetic field in heavy-ion collisions. The eventual experimental signals of the chiral magnetic effect (CME) have been measured. The CAT explicitly shows the generation and evolution of the charge separation, the signals of the CME through the CAT are quantitatively in agreement with the experimental measurements in Au+Au collisions at s=200 GeV, and the centrality dependence of the CME fraction follows that of the fireball temperature. Our simulation supports the generation of the CME.

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Information

Phys. Rev. C 109, L031903– Published 18 March, 2024
  • Received 5 December 2023
  • Accepted 16 February 2024
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